Fluid-pressure regulator.



R. M. KELLOGG &1. K. CROWEL.

FLUID PRESSURE REGULATOR.

APPLICATION FILED APR.14. 191s.

1 1 99,567. Patented Sept. 26,1916.

"4 SHEETS-SHEET 1.

R. M. KELLOGG &1. K. CROWELL.

FLUID PRESSURE REGULATOR.

APPLICATION F|LED APR.14. 1915.

Patented Sept. 26, 1916.

4 SHEETS-SHEET 2.

R. M. KELLOGG 6L I. K. CROWELL.

FLUID PRESSURE REGULATOR.

APPLICATION FILED APR.14. |916.

1,1 99,5 67. Patentedsept.. 26, 1916.

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FLUID PRESSURE REGULATOR.

APPLICATION FILED APII. I4. 191s.

1,199,567. Patentedsept. 26,1916.

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I, nAriroNn M. KELLOGG, or MOUNT FLUID-PRESSURE REGULATOR.

i To all 'whom it may concern:

Be it known that we, RAYMOND M. KEL- LOGG and J Aims K. Ciiowiiim,citizens of the United States, residing at Mount Vernon andl Rye,respectively, both in the county of Westchester and State of New York,have invented certain new and usefulf Improve- Y. ments in Fluid-Pressure Regulators; and

we do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable Others skilled in theart to which it appertains to make and use the same.

The present invention relates to improvevments in fluid pressureregulators,- and has for its principal object to equip fluid pressureregulators,vparticularly of the type of the Reynolds pressurecontrolling system as set orthin the U. S. Patent No. 843,174, issued.February 5, 1907, with a controlling device for permitting of anincreased pressure in the low pressure main during the Y hours of highconsumption.

More particularly stated, the invention contemplates thek use of aVenturi tube arranged to by-pass a valve in the low pressure main andthe throat of which is in communication with the low pressure auxiliaryments, which will more fully hereinafterV appear, over the U. S. patentsgranted to Ernest F. Lloyd, notably the Patent No. 1,014,830, for apressure increaser?, granted January 16, 1912; and in which the Venturitube is arranged `,to by-pass a valve in the low pressure main, it beingin communication at its throat and one mouth through separate pipes withopposite sides of a diaphragm 'in a load drum.

In the accompanying drawings' forming a part of this application, andinlwhich similar reference symbols indicate corresponding parts in theseveral views: Figure 1 is a cross sectional View, with parts showninelevation, of a forni of fluid pressure regulator equipped with acontrol device as constructed, in accordance with the present invention.Fig. 2 is a similar view of a modied forni of fluid pressure regulator.Fig. 3 is a longitudinal sectional view through a pressure controllingsystem haying an auxiliary low pressure regulator in combination withthe controlling device -Specication of Letters Patent; Application iuedApril 14, 191s. serial No. 91,245.

vniiNON, AND rms i; cnOwE'LL, or aan, NEW

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Patented sepa 2e, 191e.

, forming the present invention.` Fig-4 is an elevational view of the.present form of the Reynolds regulator' illustrating a Venturi controldevice as constructed after our invention; and Fig. 5 is a sectionalview, withl partin elevation, of the device lshown in Referring moreparticularly .to Fig.l 1, 1 designates the high pressure and 2 the lowpressure mains', passage between which is under the control of thevalves 3, 3, on the common stein 4.-. A. leverf is connected to the stem4 at'one end and carries weights 6` on its other end, which constantlytend to raise the valvesm3 3, away rom their seats 'to permit iiow of'the luidfrom the high ressure main 1 to the low pressure main 2.

caring on the upper end of the valve stem 4 is a control rod 7 connectedto be operated from a diaphragm 8, which provides a compartment 9.thereahove in communication with the low pressure main 2 through a pipe10 which is under the control of a `valve- 11. When the pressure in themain 2 exceeds a predetermined degree, for lwhich the weights 6 have.been previously set, the pres'- surebeing in open communication with thechamber 9 will distend the diaphragm 8,

thereby moving the control rod 7 down, which will -similarly force thevalve stem 4 downwardly and the valves, 3, 3, onto their seats. Thismechanism is of the usual construction andneeds no further descriptionhere. In accordance with the present invention a valve 12 is located inthe low pressure main 2-and icy-passing said valve is af Venturi tube13, the liow through which isregulated by valves 14 and 15. At thethroat 16 of the Venturitube 13 is connected a pipe 17, including avalve 18, and which places the throat 16 in communication with thechamber 9 above the diaphragm 8. If it is desired to maintain a constantpressure in the main.2 the valve 18 is closed, as may likewise be thevalveslll and l5, whilejthe valve 11 in the pipe 101is open, as is alsothe valve 12 in the main 2, placing the llow pressure main in directcommunication with the chamber 9 therethrough. lt will thus be apparentthat the regulating system will operate in the usual manner, and thevalves 3, 3, willhe opened and closed` accordingly as the pressureJfalls and rises in the low vpressure main 2. If it is' desired that thepressure in the `main 2 he increased during the hours of highconsumption, the valvell is to be closed, thusfshuttlng E communicationbetween the low pressure main 2 and chamber 9 through the pipe 10. Thevalve 12 is closed partially and the valves 14, and 18 are opened. Thecutting down of the valve 12 will induce a flow of the iuid .through theVenturi tube 13 andyin accordance with main 2, and as the throat 16 isin communication with the chamber 9 through the pipe 17, the pressure insuch chamber will be thus comparatively reduced as over the pressurewhich would exist in the pipe 10 in accordF ance with the usual' methodof operation. .The xweights 6 lwill, therefore, when the Venturi tube 13is in use, encounter a reduced pressure in the chamber 9, and willtherefore be effective to open the valves 3, 3, wider and permit arelatively higher pressure to obtain in the low pressure main 2. By themechanism herein shown and described it will be apparent that the systemmay he readily changed from one method of regulation to that of theother by a simple manipulation of a few valves.

Referring now in detail to Fig. 2, a modified form of regulation is hereshown in which 20 designates the high pressure and 21 -the low pressuresides of the system, passage through which is under the control of thevalve 22. Such valve 22 is carried on the lower end of the stem 23supported o'n a diaphragm 24 in a casing 25, and normally operativeunder the influence of a weight 26 to carry the diaphragm 24 and stem 23downwardly to move the valve 22 from its seat and permit flow from thehigh pressure to the low pressure sides of the system. Beneath thediaphragm is a chamber 27 in communication with a lbv-pas's 28 with thelow pressure main 21,. AWhen the pressure in .the main 21, which iscommunicated through the by-pass 28 to the chamber 27, exceeds a degreesufficient to raise the weight 26 associated with the diaphragm 24, thevalve 22 will be partially or wholly closed `and the pressure in themain 21 correspondingly reduced. The by-pass 28 is preferably under thecontrol of the valve 29 which is closed when the Venturi tubearrangement is in operation, or this by-pass 28 may be plugged. In `thelow pressure main 21 is a valve 30 by-passed by a Venturi tube 31provided with valves 32 and 33. To the throat of the Venturi tube 31 isconnected a pipe 34 including a valve 35, ,and in communication with thechamberf27.v vrThe operation of this modifiedregulator is assubstantially described above in connection with Fig. 1 and needs butbriefeXpla-nation here. 'If it is desired that the pressure in the main21 he increased during the hours requiring greater consumption, thevalve 30 is cut' down to induce a iow fromthe low pressuremain 21through the Venturitube 31, the valves 32 and 33 being, of course,open.` The valve 29 is now closed, or the by-pass -28 plugged up to cutout the by-pass 28 'and the valve 35 in pipe 34 opened, placing thethroat of the Venturi tube 31 in freeV communication' with the chamber27. The pressure in the chamber 27, which is now received from thethroat `of the Venturi tube 31, is substantially reduced over thatreceived directly from the low pressure main 21 through the by-pass 28,and consequently theweight 26 will be effective to open the valve 22wider and permit a greater pressure to escape from the high pressureside 20 to the low pressure main 21 to satisfy the increased consumptiondemands.

.Considering now thel system illustrated in Fig. 3, 40 designates thehighv pressure and 41 the low pressure mains. 42, 43, are the diaphragm45, is in open communicationv with the low pressure main 41 asillustrated. The lever 46 is fulcrumed to rock in a bracket 48, andcarries a weight 49 normally tending to'depress such lever and carry thevalves 42, 43,`away from their seats. At 50 is illustrated an auxiliaryregulator 4in communication through a pipe 51 under the control of avalve 52 with the low pressure main 41. The auxiliary regulator 50includes a diaphragm 53 connected by a rod 54 to the free end of thelever 46. A Venturi tube 55 is shown to by-pass the valve 56 located inthe low pressure main 41, and provided with entrance and exit valves 57and 58. The throat in the Venturi tube 55 is connected by a pipe 59having a valve 60 with the pipe 51 connecting the low presrsure main 41with the auxiliary regulator 50.

opposed by the weight 49 on the lever 46 f through the rod 54 anddiaphragm 53.

'Whenever the pressure in the main 41 ex ceeds the degree for which thesystem is'set, such pressure will raise the diaphragm 53, rod 54 andlever 46, thus swinging the latter to close the valves 42, 43, Thisoperation of closing the valves 42, 43, is also assisted by the lowpressure in the. main 41 operating against the diaphragm'45. By closingthe valve52 and opening the valve 60 the Venturi tube 53 will thereby becut in circuit with the main 41, the valve 56 being partially closed toinduce a ii'ow therein in the manner above described for the'apparatusshown in IEigs. 1 and 2. The pressure in the throat of the Venturi tube55 being thus lower than that'in the main 41, a higher pressure will bepermitted to build up in the low pressure main 41 before the auxiliaryregulator 50 will be actuated to close the valves 42, 43.

Referring now to Figs. 4 and 5, wherein` is illustrated the improveddevice as applied to the Reynolds regulator, 61 is the high pressure and62 the low pressure mains. The main valves are indicated at 63 and 64 asbeing carried on a stem 65 projecting up through a diaphragm 66. Thediaphragm 66 is disposed in a casing 67 arranged in communication withthe atmosphere above said diaphragm, and in communication throughpassages 68 with the low pressure main 62- beneath the diaphragm. Abovethe casing 67 the valve stem 65 is coupled to a lever 69 fulcrumed at70, and in connection at its outer end with a sleeve 71 extending downand fitting over a rod 72. A flange 73 fastened to the rod 72 supportsweight 74 and is adapted to support the sleeve 71. The rod 72 operatesthrough an opening in the top of a casing 76 in which is a diaphragm 77connected to actuate the rod 72. 1n the casing 76, below the diaphragm77, is a chamber 78 in communication, by means of a pipe 79, with a pipe80 extending between an auxiliary high pressure regulator 81 and anauxiliary low pressure regulator 82. In the pipe 80'is a needle valve 83for controlling passage of the fluid from one auxiliary regulator 81 tothe other auxiliary regulator 82. The regulator 81 is in communicationthrough a pipe 84 with the high pressure main 61, and

is under the control of a valve 85. The pipe' 84 is arranged to beclosed by a valve 86 carried by a lever 87 connected to a diaphragm 88in the regulator 81. 89 is a spring operating to depress the diaphragm88 and unseat the valve 86, s uch spring being regulated to operate atany required pressure by an adjusting device 90.

The low pressure auxiliary regulator 82 includes a valve 91 for closingthe pipe 80,

which valve"is supported on one end of a lever l92 connected to beactuated from a diaphragm 93 under the influence of a weight or othercounterbalance 94. The auxiliary regulator 82 is in communication by apipe 95 with the low pressure main 62, passage therethrough beingregulated by valve 96. At 97 and 98 are hand manipulated valves in thehigh and low pressure mains, respectively'. By-passing the valve 98 is aVenturi tube 99, having a throat 100 connected to auxiliary regulator 82with the main 62, are

open. The Huid from the main 61 will, therefore, enter the auxiliaryhigh pressure regulator 81 through the valve 86 therein until such fluidaccumulates in the regulator in suHcient quantities and under a pressuresuicient4 to raise the diaphragm 88 therein in opposition to the spring89;

which action will oscillate the lever 87, press-` ing the valve 86 toits seat and preventing further ingress of the fluid. yThe valve 83,however, being open to the required degree, the Huid will pass from theauxiliary regulator` 81 through the pipe 80 and its pressure will beexerted in the pipe 79, and thence to the chamber 78 in the casing 76beneath the diaphragm 77 therein.

The Huid will pass through the pipe 80 to the low pressure auxiliaryregulator 82, and through the valve 91 therein to an extent controlledby the weight 94, and will pass through the pipe 95 to the low pressuremain 62. The presence of the uid in predetermined quantity and underpredetermined pressure in the pipe 80 will operate normally to hold thepressure in pipe 62 constant, but any decrease in the pressure in pipe80, due to the opening of valve 91 in its endeavor under the action ofweight 94 to maintain a constant pressure in pipe 62 under an increaseddemand, will lower the pressure in' pipe 79 and so in the casing 76,which will operate to allow the diaphragm 77 to lower, as likewise theconnected rods 72 and 71, thereby oscillating the lever 69 to lower thestem 65 and increase the opening of the valves 63, 64.

Whenever the pressure in the main 62 rises beyond a certain degree, thediaphragm 93 in the auxiliary low pressure regulator 82 will be raised,the lever 92 oscillated, and the valve 91 moved to close entrance offurther fluid from the pipe 80. The pressure in the pipes 80 and 79, andin the chamber 78 of the casing 7 6, will accumulate and raise thediaphragm 77 and connected parts to close the valves 63 and 64. Thevalves 63, 64, are assisted to close when the low pressure which is incommunication through the perforation 68 with the lower side of thediaphragm 66, accumulates.

The pressure building up in the pipes 79 and 8O will cause a backpressure inthe high pressure auxiliary regulator 81 and .will

operate upon/the diaphragm 88 and swing I the lever 87 to close thevalve 86, thus preventing further entrance of fluid from the main 61.The main 62 will thereby be cutp ragm 93 and lever 92 and opening valve91, which will form an open passage vfor the escape of the accumulatedpressure in the pipes 8O and 79 and in the chamber 78. When the pressureis so relieved the diaphragm 77 will descend, as will also thea'ssociated valves 63 and 64, thus again placing the mains in opencommunication.

If it is desired that the pressure in the main 62 be increased Wheneverthe demand increases, as at the hour of high consumption, the V'lowpressure regulator 82 instead of being arranged in direct communicationwith the pressure in the main 62, is cut into the throat 100 of theVenturi pipe 99 by opening the valve 102, the.valve 96 inthe pipe 95being closed. The valve 98 is also partially closed to induce a iiowthrough the Venturi tube 99, and the greater the flow through such tubethe lower will be the pressure at the throat 100, and consequently thelower in the outlet of the auxiliary low pressure regulator 82, therebymaintaining the valve 91 open to keep the chamber 78 in the casing 76freer of pressure and the valves 63 and 64 wider open. It will thus be-appreciated that the greater the consumption the greater will be thevelocity of iow in the Venturi tube 99, and the lower will be thepressure at the throat 100, thus having the eilect of opening the valves63 and 64 wider as the demand for uid increases; and which is inproportion to a pressure, which is that at the throat 100 of the Venturitube 99, appreciably below that which obtains in the low pressure main62, and which proportionately decreases rapidly as the demand increases.

The improved regulating system as herein constructed, may be operateddirectly from the pressure in the low pressure main ,or may be changedover to the Venturi arrangement by the simple operation of two or morevalves, thus yielding a system which will have a high range of pressureregulation and which may be installed on existing systems at small cost.

It is obvious that those skilled in the art may vary the details ofconstruction and arrangements of parts without departing from the spiritof our invention, and therefore we do not wish to be limited to suchfeatures except as may be required by the claims.

We claim:

1. In an apparatus of the character described, the combination of highand low pressure mains, valve means controlling passage between` saidmains, a regulator -connected to said valve means, means lacing saidregulator in communication with the low pressure main, valve meansforicontrol- `ling said last-named means, a b -pass arranged incommunication with sai low pressure mainand having a pressure reducingportion therein, .means placing said regulator in communication with thepressure reducing. portion of said'by-pass, and means in said last-namedmeans for controlling passage therethrough, substantially as described.

2. In 4an apparatus of the character described, the combination of highand low pressure mains, valve means controlling passage between saidmains, a regulator connected to operate said valve means, a conduitplacing the regulator in communication with said low pressure main,valve means included in said conduit, a Venturi 'tube arranged incommunication with said low pressure main, a conduit connecting saidregulator and the throat of said Venturi tube, and valve means includedin said conduit for controlling passage there-4 through, substantiallyas described.

3. In an apparatus of the character described, the combination ofhighand low pressure mains, valve means for controlling passage between saidmains, a regulator connected to control said valve means, a conduitplacing said regulator in communication with the low pressure main, avalve included in said conduit, va valve in said low pressure main, atube by-passing said last-named valve and having a onstricted throat, aconduit placing the constricted throat of said tube in communicationwith said regulator, and a valve in saidv lastnamed conduit forcontrolling passage therethrough, substantially as described.

4. In anapparatus of the character described, the combination of highand low pressure mains, a valve controlling passage between said mains,a casing, a dia-- phragm in said casing in connection to control theoperation of said valve, a chamber. to one side of said diaphragm, aconduit placing said chamber in communication with the low pressuremain, a valve in eluded in said conduit, a valve in said low pressuremain, a Venturi tube by-passing said last-named valve, a conduitconnecting the throat of said Venturi tube with said diaphragm chamber,and a valve included in said last-named conduit, substantially asdescribed.

5. In an apparatus of the character described, the combination of highand low pressure mains, valve means controlling munication through oneof said auxiliary regulators with said Valve-operating regulator, valvemeans located in said conduit, a Venturi tube arranged in communicationwith said low pressure conduit, a conduit connecting the throat of saidauxiliary regulators, and valve means located in said last-namedconduit, substantially as described.

6. In an apparatus of the character described, the combination of highand low pressure mains, valve means controlling passage between saidmains, a valve-operating regulator, high and low pressure auxiliaryregulators, conduits connecting said auxiliary regulators and saidvalve-operating regulator, a conduit placing said low pressure main incommunication with the low pressure auxiliary regulator, valve meansincluded in said conduit, a Venturi tube arranged in communication Withsaid low pressure conduit, a valve in said low pressure main forinducing a ow through said Venturi tube, a conduit connecting the throatof said tube with said last-named conduit, and a valve included in saidlastsubstantially as described, the combination of high and low pressuremains, valve means controlling passage between said mains, a.valve-operating regulator including a casing, a diaphragm in said casingand a chamber to one side of said diaphragm, auxiliary regulators,conduits placing said auxiliary regulators in communication with saidchamber, conduits placing said auxiliary regulators in communicationwith the high and low pressure mains, valve duits, a Venturi tubearranged in circuit with said low pressure main, a hand-operated valvein said low pressure main for inducing a flow through said Venturi tube,a conduit arranged between the said tube and one of said auxiliaryregulators, and a valve situated in said last-named conduit,substantially as described.

In testimony whereof, We aliix our signatures.

RAYMOND M. KELLOGG. JAMES K. CROWELL.

means in said conthroat of l I'

